CVE-2026-46087 Details
Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start() Destroy the DAMON context and reset the global pointer when damon_start() fails. Otherwise, the context allocated by damon_stat_build_ctx() is leaked, and the stale damon_stat_context pointer will be overwritten on the next enable attempt, making the old allocation permanently unreachable.
A memory leak vulnerability has been identified in the Linux kernel's DAMON (Data Access Monitoring) subsystem, specifically within the 'damon_stat_start()' function. This issue arises when the 'damon_start()' function fails, as the allocated DAMON context is not properly released. The failure causes a memory leak, leaving the context allocated by 'damon_stat_build_ctx()' unreachable. Additionally, the stale 'damon_stat_context' pointer is overwritten during the next enable attempt, permanently losing access to the old allocation. This vulnerability affects the Linux kernel stable tree.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been patched. Instructions for downloading the latest kernel version can be found on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/50bc1d7e0f3bb6932c8dc5da0907eead0790176b | kernel.org | Patch |
| https://git.kernel.org/stable/c/8a62c58411cbd748d7aeab0e5b0963e33ff47a7a | kernel.org | Patch |
| https://git.kernel.org/stable/c/e04ed278d25bf15769800bf6e35c6737f137186f | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.17, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |